ActivityWatch vs Solidtime
ActivityWatch and Solidtime are both time tracking software. ActivityWatch is open source under MPL-2.0, with 19k GitHub stars. Solidtime is open source under AGPL-3.0, with 9k GitHub stars.
Which to pick
- Pick ActivityWatch when
- You want private automatic time tracking without a cloud service.
- Pick Solidtime when
- An agency wants a modern self-hosted Toggl or Clockify replacement.
Side by side
Automatically records which apps, windows and websites you use and shows how you spent your time, keeping data on your own machine.
A time tracking app for freelancers and agencies with projects, clients, billable rates and reports.
Browser and editor tracking need extra watchers, and team use is not its focus.
Still pre-1.0, and some features are in the paid cloud.
Production-ready
Usable
Desktop app
Self-hosted server, cloud service and desktop app
Python and Rust
PHP, Laravel, Vue, TypeScript and PostgreSQL
Open source, MPL-2.0 (weak copyleft)
Open source, AGPL-3.0 (network copyleft)
You can use it inside a product you sell; changes you make to its own files must be shared.
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.
19k GitHub stars
9k GitHub stars
Established: started 10 years ago, latest release v0.14.1.
Established: started 2 years ago, latest release v0.22.1.
Other comparisons
More time tracking apps
Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.